diff --git a/src/main/java/com/palnet/biz/api/ctr/cntrl/service/CtrCntrlService.java b/src/main/java/com/palnet/biz/api/ctr/cntrl/service/CtrCntrlService.java
index a25299f..26d166d 100644
--- a/src/main/java/com/palnet/biz/api/ctr/cntrl/service/CtrCntrlService.java
+++ b/src/main/java/com/palnet/biz/api/ctr/cntrl/service/CtrCntrlService.java
@@ -1,5 +1,6 @@
 package com.palnet.biz.api.ctr.cntrl.service;
 
+import java.awt.Toolkit;
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.HashMap;
@@ -189,10 +190,12 @@ public class CtrCntrlService {
 		
 		List<CtrCntrlGroupModel> list = query.findByGroupInfo();
 		List<CtrCntrlGroupArcrftModel> arcrftList= new ArrayList<>();
+		if(list.size()>0) {
 			for(CtrCntrlGroupModel lists : list) {			  
 				List<CtrCntrlGroupArcrftModel> groupArcrft = query.findByGroupArcrft(lists.getGroupId());
 				arcrftList.addAll(groupArcrft);
 			}
+		}
 			return arcrftList;
 	}